REST APIs with Flask and Python - Variables in Python

This video provides a refresher on Python variables, explaining how they are defined and assigned. It covers the use of integers, floats, and strings, and demonstrates how to use the print function to display values. The video also discusses variable reassignment and the concept of mutability, concluding with a reminder that this is an advanced refresher, not an introductory course.

What is the primary purpose of a variable in Python?

• To define a loop

• To store a value

• To perform calculations

• To create functions

How does Python handle the assignment of a value to a variable?

• It assigns the value to the variable first

• It creates the value first, then assigns it to the variable

• It checks the variable type first

• It ignores the value if the variable already exists

What is the result of multiplying a float variable by a number in Python?

• A string

• An integer

• A float

• A boolean

Which data type is used to store text in Python?

• Boolean

• String

• Float

• Integer

What happens when you concatenate two strings in Python?

• They are multiplied

• They are added together

• They are divided

• They are subtracted

If variable 'a' is assigned to 25 and 'b' is assigned to 'a', what happens if 'b' is later assigned to 17?

• Both 'a' and 'b' become 25

• Both 'a' and 'b' become 17

• 'a' becomes 17 and 'b' remains 25

• 'a' remains 25 and 'b' becomes 17

What is the effect of reassigning a variable in Python?

• It creates a new variable

• It deletes the previous value

• It only changes the value of the reassigned variable

• It changes the value of all variables